True/False Indicate whether the
statement is true or false.
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1.
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All important scientific discoveries are made by professional scientists.
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2.
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Scientific models have two basic types.
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3.
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Variables are those factors that can be changed in an experiment.
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4.
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When observing and recording the results of an experiment, observations may
include both measurements and descriptions.
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5.
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Using scientific methods means doing a professional experiment.
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6.
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Laboratory safety is not an important concern for scientists.
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7.
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If the results of a study do not support a hypothesis, it means that the
experiment failed.
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8.
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Scientific models are often used to help scientists understand a problem.
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9.
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Computer models can be touched.
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10.
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Einstein's idea model for his theory of relativity was also built as a
physical model.
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11.
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Once a scientific model has been created, it cannot be changed.
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12.
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Although people of different races, sexes, and cultures have made scientific
discoveries, they have all been adults, older than you.
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13.
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The only way to test a hypothesis is by conducting a controlled
experiment.
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14.
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An important part of planning an experiment is determining the materials
needed.
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15.
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Data tables help you to organize your observations and test results.
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16.
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Data are always numerical measurements.
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17.
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A hypothesis is a decision based on the results of the experiment.
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18.
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If it takes more than a few experiments to find the answer to a particular
problem, it means that the scientist has failed and is not a very good researcher.
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19.
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It is often necessary to look at the same problem in different ways in order to
find an answer.
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20.
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Models may change as new discoveries are made.
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Multiple Choice Identify the
choice that best completes the statement or answers the question.
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21.
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The process of learning more about the natural world is ____.
a. | an experiment | c. | a hypothesis | b. | a control | d. | science |
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22.
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Experiments and investigations must be ____.
a. | approved | c. | repeatable | b. | unreproduceable | d. | accepted |
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23.
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A prediction about a problem that can be tested is a(n) ____.
a. | hypothesis | c. | dependent variable | b. | independent variable | d. | control |
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24.
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It is important to ____ when drawing conclusions from scientific
information.
a. | keep notes | c. | talk to others | b. | make up your mind | d. | keep an open
mind |
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25.
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The factor being measured in an experiment is the ____.
a. | hypothesis | c. | variable | b. | scientific law | d. | control |
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26.
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A variable in an experiment that stays the same is a(n) ____.
a. | independent variable | c. | constant | b. | dependent variable | d. | control |
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27.
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Science cannot answer questions about ____.
a. | distance | c. | politics | b. | temperature | d. | the natural
world |
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28.
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Models can do all of the following EXCEPT ____.
a. | make a hypothesis | c. | test predictions | b. | communicate | d. | save time, money, and
lives |
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29.
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Limitations of models include ____.
a. | ability to communicate | c. | the tendency to change | b. | the ability to test
predictions | d. | the ability to
save time |
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30.
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Models can be used to describe which of the following environments?
a. | the floor of the ocean | c. | space | b. | volcanoes | d. | all of the
above |
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31.
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Scientific ____ must be supported by observations and results from many
investigations and are not absolute.
a. | constants | c. | systems | b. | theories | d. | laws |
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32.
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The three branches of science are ____, Earth, and physical.
a. | space | c. | life | b. | physics | d. | chemistry |
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33.
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Another term for technology is ____.
a. | applied science | c. | comparison | b. | controlled experiment | d. | sequence |
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34.
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When designing an experiment, the first step is to ____.
a. | draw conclusions | c. | recognize a problem | b. | form a hypothesis | d. | test a
hypothesis |
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35.
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When conducting an experiment, the last step is to ____.
a. | analyze the data | c. | form a hypothesis | b. | draw conclusions | d. | recognize a
problem |
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36.
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A camera is an example of ____.
a. | an experiment | c. | technology | b. | a robot | d. | a scientific
method |
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37.
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To evaluate the observations you make, you must use ____.
a. | a hypothesis | c. | measurements | b. | critical thinking | d. | models |
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38.
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Scientists must be impartial and not base their conclusions on ____.
a. | opinions | c. | models | b. | evidence | d. | experiments |
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39.
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To ____ means to draw a conclusion based on something you observe.
a. | guess | c. | model | b. | control | d. | infer |
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40.
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____ materials are designed to get you to buy a product or service.
a. | Model | c. | Observed | b. | Scientific | d. | Advertising |
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Short Answer
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41.
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List at least two things that scientists and explorers have in common.
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42.
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Describe a scientific theory.
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43.
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How do scientists come up with hypotheses?
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44.
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Why are models important?
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45.
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What is a system?
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46.
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Why might scientists conduct multiple trial experiments rather than rely on a
single trial?
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47.
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Give at least two reasons why an experiment might not support a hypothesis even
when the hypothesis is correct.
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48.
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What is the difference between science and technology?
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49.
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What are examples of careers in each branch of science?
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50.
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Why is technology important?
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51.
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List at least three important science skills.
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52.
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Describe how scientists might use at least two science skills to explore data
from studying the planet Pluto.
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53.
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List at least three important safety rules to follow when conducting science
experiments or activities.
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54.
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What is a system?
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55.
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Explain the role of opinion in observing scientific data.
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56.
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What is the difference between observation and inference?
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57.
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What is one way scientific theories and scientific laws are similar and one way
they are different?
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58.
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What is an independent laboratory and why would its results be considered more
reliable than the results from a laboratory paid by a company selling a particular product?
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